Electric toothbrush



FIG. 1 is a perspective view of an electric toothbrush;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Broken lines are used in the drawings to designate environmental structures or parts of an electric toothbrush that form no part of the claim. 

CLAIM The ornamental design for an electric toothbrush, as shown and described. 